PROBLEM TO BE SOLVED: To provide a method for manufacturing a tubular body in which electrolytic polishing can be achieved evenly uniformly by a simple method in the electrolytic polishing of the tubular body.SOLUTION: A method for manufacturing a tubular body is characterized by comprising the following (a) step and (b) step at least one time or more. The method comprises: (a) the step of supporting the inner surface of the tubular body from inside by an anode conductive member coming in electrical contact with the tubular body, and electro-polishes an outer face of the tubular body； and (b) the step of supporting the outer face of the tubular body from the outside by the anode conductive member coming in electrical contact with the tubular body, and electro-polishes an inner surface of the tubular body. However, an inner whole circumference or an outer whole circumference of the tubular body is supported by the anode conductive member at least in any of the (a) step and the (b) step.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】管状体の電解研磨において、簡易な方法により、ムラなく均一に電解研磨を達成できる管状体の製造方法を提供する。【解決手段】下記（ａ）工程および（ｂ）工程を少なくとも１回以上含むことを特徴とする管状体の製造方法。（ａ）管状体と電気的に接触するアノード導電性部材によって、管状体の内面を内側から支持して、管状体の外面を電解研磨する工程（ｂ）管状体と電気的に接触するアノード導電性部材によって、管状体の外面を外側から支持して、管状体の内面を電解研磨する工程 但し、前記（ａ）工程と前記（ｂ）工程の少なくともいずれか一方において、アノード導電性部材によって管状体の内面の全周または外面の全周を支持する。【選択図】図３
